debian lenny sudden restart

[Oleg Goldshmidt]

Omer Zak <w1 at zak.co.il> writes:

> On Thu, 2009-07-16 at 18:21 +0300, Shimon Panfil wrote:
>> Hi folks,
>> today my main box running debian lenny made sudden restart. How can I  
>> investigate what was the reason? What log should I inspect? I use UPS  
>> so the reason might be more interesting that simple power failure.

<snip>

> Usually it is not restart, but the keyboard and mouse freeze in X-Window
> and I have to hit the Big Red Button.
> More rarely, the X-Window subsystem spontaneously restarts.

<snip>

> Usually the system gets stuck when I do something (such as opening a new
> page) with the browser (Iceweasel 3.0.6).
>
> Like Shimon, I would appreciate advice which log files to inspect.

In your case, maybe Xorg logs (/var/log/Xorg* or similar, I am not a
debian user)?

Shimon gives less clues, so I'd start to search for suspects in the
syslog...

-- 
Oleg Goldshmidt | pub at goldshmidt.org